Income Summary says I received "Social Assistance Income"

Hi All! 
 I have no idea where this "income" might have come from, but TurboTax on line version has stipulated in the "Income Summary" Page that I received 18k!  I did not receive a T5007 and have made no such entry.  I do receive Canada OAS but not 18K. How can I find were this has come from?  The online version does not give you all the individual files. 

Many thanks